Independent liquid tank, liquid cargo tank and liquid carbon dioxide transport ship

Abstract

The invention relates to an independent liquid tank, a liquid cargo tank and a liquid carbon dioxide transport ship, and belongs to the technical field of liquefied gas transport ships, the independent liquid tank comprises a plurality of valve bodies which are integrally connected, at least two valve bodies are located at the bottom of the independent liquid tank, longitudinal bulkheads are arranged between the valve bodies at the bottom, and liquid tank left and right valve body openings are formed in the bottom of the longitudinal bulkheads; two valve bodies on two sides of the longitudinal bulkhead are communicated through liquid, and one valve body can be provided with a liquid tank pump. The C-shaped independent liquid tank with the multiple petal bodies is adopted, the tank capacity can be effectively increased, and the plate thickness and weight of the independent liquid tank can be effectively controlled; a single liquid tank pump is only arranged in the valve body on one side of the liquid tank, so that the number of the pumps can be greatly reduced, and the initial investment is reduced; two exhaust chambers are arranged on the cargo tank area deck surface, so that the deck arrangement can be effectively simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of liquefied gas transport ships, and in particular relates to a liquid carbon dioxide transport ship using a special multi-petal type independent liquid tank. Background Art

[0002] The existing fleet of CO2 transport ships is relatively small, and the cargo hold capacity is relatively small. However, as CCUS continues to attract attention as a means of carbon neutrality, the demand for CO2 shipping will increase, and more and more medium and large CO2 transport ships will be welcomed by the market. Due to the high density of CO2 cargo and high cargo hold pressure, the capacity and diameter of a single hold cannot be too large, otherwise the plate thickness will be too large, resulting in excessive increase in weight and cost, and challenges to the construction process. Therefore, if medium and large CO2 transport ships want to increase their capacity, a more reasonable solution is to use double-flap tanks or multi-flap tanks.

[0003] However, when double-flap tanks or multi-flap tanks are used, the number of pumps will usually increase, the initial investment will be higher, and the deck layout will be more difficult. Therefore, it is necessary to consider the characteristics of this type of ship and cargo to consider a better ship design solution. Summary of the invention

[0004] In view of the difficulty in increasing the capacity of existing liquid carbon dioxide transport ships, the present invention provides a liquid carbon dioxide transport ship using a special multi-petal independent liquid tank, which can increase the capacity, reduce the plate thickness, reduce the number of liquid cargo pumps, optimize the layout, and reduce the initial investment.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an independent liquid tank, including a plurality of petals connected as one body, wherein at least two of the petals are located at the bottom of the independent liquid tank and a longitudinal bulkhead is provided between the petals at the bottom, and left and right petal openings of the liquid tank are provided at the bottom of the longitudinal bulkhead, the petals on both sides of the longitudinal bulkhead are liquid-connected, and one of the petals can be provided with a liquid tank pump.

[0006] Preferably, a liquid tank air chamber is provided on the top of the independent liquid tank.

[0007] Preferably, the liquid tank pump is provided as a single unit.

[0008] Preferably, the liquid tank pump is arranged on the valve body on one side of the independent liquid tank.

[0009] Preferably, the independent liquid tank is C-type.

[0010] Preferably, the liquid tank air chamber can be provided in plurality.

[0011] Preferably, a passage for inspection and maintenance is provided between the petals at the bottom of the independent liquid tank.

[0012] The technical solution of the present invention also provides a liquid cargo tank, which is provided with two or more independent liquid tanks as mentioned above and is arranged on the left and right.

[0013] The technical solution of the present invention also provides a liquid carbon dioxide transport ship, which is provided with the liquid cargo tank mentioned above, and the top of the liquid cargo tank is provided with a cargo hold area deck surface.

[0014] Preferably, the cargo hold area deck surface is provided with two exhaust chambers.

[0015] The beneficial effects of the present invention are as follows: (1) The use of a C-type independent tank with multiple petals can effectively increase the tank capacity and effectively control the plate thickness and weight of the independent tank. (2) Only a single tank pump is provided in the petal on one side of the tank, which can greatly reduce the number of pumps and reduce the initial investment. (3) Two exhaust chambers are provided on the deck surface of the cargo tank area, which can effectively simplify the deck layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a liquid carbon dioxide transport ship using a special multi-petal independent liquid tank according to the present invention.

[0017] Figure numerals: 1. liquid cargo tank; 2. independent liquid tank; 3. liquid tank pump; 4. openings on the left and right valves of the liquid tank; 5. liquid tank air chamber; 6. deck surface of the cargo hold area. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 The present invention provides a liquid carbon dioxide transport ship using a special multi-petal independent liquid tank, including a liquid cargo tank 1, an independent liquid tank 2, a liquid tank pump 3, left and right petal openings 4 of the liquid tank, a liquid tank air chamber 5, and a cargo hold area deck surface 6.

[0020] In each liquid cargo tank 1, two left and right C-type independent liquid tanks 2 are arranged, and each C-type independent liquid tank 2 includes multiple petals. For each independent liquid tank 2, a single liquid tank pump 3 is arranged only in the petal on one side. The bottom of the longitudinal bulkhead between the two petals at the bottom of the independent liquid tank 2 is provided with left and right petal openings 4, and the left and right petals are in liquid communication. Only one liquid tank air chamber 5 is arranged on the top of each independent liquid tank 2, and a passage for inspection and maintenance is arranged between the petals at the bottom of the independent liquid tank 2. Two exhaust chambers are arranged on the deck surface 6 of the cargo hold area, which effectively simplifies the deck layout.

[0021] The liquid carbon dioxide transport ship using special multi-valve independent liquid tanks of the present invention can effectively increase the tank capacity, reduce the thickness and weight of the liquid tank plate, reduce the number of liquid cargo pumps, simplify the deck layout, and reduce the initial investment by arranging two left and right C-type independent liquid tanks 2 in each liquid cargo tank 1, each C-type independent liquid tank 2 including multiple valve bodies, and arranging a single liquid tank pump 3 only in the valve body on one side of each independent liquid tank 2.

[0022] As a preferred design, in this embodiment, a single or multiple C-type independent liquid tanks 2 may also be provided in each liquid cargo tank 1 .

[0023] As a preferred design, in this embodiment, a plurality of independent liquid tank air chambers 5 may also be provided on the top of the independent liquid tank 2 .

[0024] The above description is only an illustrative description of the principle and efficacy of the present invention, and is not intended to be any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An independent liquid tank, characterized in that: It comprises a plurality of petals connected in one piece, wherein at least two of the petals are located at the bottom of an independent liquid tank (2) and a longitudinal bulkhead is provided between the petals at the bottom, and left and right petal openings (4) for the liquid tank are provided at the bottom of the longitudinal bulkhead, the petals on both sides of the longitudinal bulkhead are in liquid communication, and a liquid tank pump (3) can be provided on one of the petals.

2. An independent liquid tank according to claim 1, characterized in that: The top of the independent liquid tank (2) is provided with a liquid tank air chamber (5).

3. An independent liquid tank according to claim 2, characterized in that: The liquid tank pump (3) is provided as a single unit.

4. An independent liquid tank according to claim 1, characterized in that: The liquid tank pump (3) is arranged on the valve body at one side of the independent liquid tank (2).

5. An independent liquid tank according to claim 1, characterized in that: The independent liquid tank (2) is C-shaped.

6. An independent liquid tank according to claim 2, characterized in that: The liquid tank air chamber (5) may be provided in plurality.

7. An independent liquid tank according to claim 1, characterized in that: A passage for inspection and maintenance is provided between the petals at the bottom of the independent liquid tank (2).

8. A liquid cargo tank, characterized in that: Two independent liquid tanks according to any one of claims 1 to 7 are provided and arranged on the left and right.

9. A liquid carbon dioxide transport ship, characterized in that: A liquid cargo tank as claimed in claim 8 is provided, wherein a cargo tank area deck surface (6) is provided on the top of the liquid cargo tank (1).

10. A liquid carbon dioxide transport ship according to claim 9, characterized in that: The cargo hold area deck surface (6) is provided with two exhaust chambers.

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